I am just getting out of a 2006 CTS-V. I got it with 6mi on the odo. On the way home from the dealership on the freeway nearly 10pm (in a desolate armpit of Ga) I took her up to 130MPH, working all the way through the rpms shifting hard up and down; changed the oil that weekend and never looked back. Despite it being a poorly made car from probably the worst era of poo made American cars (ridiculous # of factory recalls serviced) I put 115,000 mi on her daily driven, modded, and tracked at Rd Atlanta whenever I got a chance.